Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / UIAutomation / UIAutomationClient / MS / Internal / Automation / WindowInteractionStateTracker.cs / 1 / WindowInteractionStateTracker.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Class used to track new UI appearing and make sure any events // are propogated to that new UI. // // History: // 01/05/2005 : Created // //--------------------------------------------------------------------------- using System; using System.Globalization; using System.Text; using System.Windows.Automation; using System.Diagnostics; using MS.Win32; namespace MS.Internal.Automation { // Class used to track new UI appearing and make sure any events // are propogated to that new UI. internal class WindowInteractionStateTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowInteractionStateTracker() : base(new int[] { NativeMethods.EVENT_OBJECT_STATECHANGE }) { // Intentionally not setting the callback for the base WinEventWrap since the WinEventProc override // in this class calls RaiseEventInThisClientOnly to actually raise the event to the client. } #endregion Constructors //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods internal override void WinEventProc(int eventId, IntPtr hwnd, int idObject, int idChild, uint eventTime) { // ignore any event not pertaining directly to the window if (idObject != UnsafeNativeMethods.OBJID_WINDOW) { return; } // Ignore if this is a bogus hwnd (shouldn't happen) if (hwnd == IntPtr.Zero) { return; } OnStateChange(hwnd, idObject, idChild); } #endregion Internal Methods //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods private void OnStateChange(IntPtr hwnd, int idObject, int idChild) { NativeMethods.HWND nativeHwnd = NativeMethods.HWND.Cast(hwnd); // Ignore windows that have been destroyed if (!SafeNativeMethods.IsWindow(nativeHwnd)) { return; } AutomationElement rawEl = AutomationElement.FromHandle(hwnd); try { rawEl.GetCurrentPattern(WindowPattern.Pattern); } catch (InvalidOperationException) { // Only raise this event for elements with the WindowPattern. return; } Object windowInteractionState = rawEl.GetPatternPropertyValue(WindowPattern.WindowInteractionStateProperty, false); // if has no state value just return if (!(windowInteractionState is WindowInteractionState)) { return; } WindowInteractionState state = (WindowInteractionState)windowInteractionState; // Filter... avoid duplicate events if (hwnd == _lastHwnd && state == _lastState) { return; } AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs( WindowPattern.WindowInteractionStateProperty, hwnd == _lastHwnd ? _lastState : WindowInteractionState.Running, state); ClientEventManager.RaiseEventInThisClientOnly(AutomationElement.AutomationPropertyChangedEvent, rawEl, e); // save the last hwnd/rect for filtering out duplicates _lastHwnd = hwnd; _lastState = state; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private WindowInteractionState _lastState; // keep track of last interaction state private IntPtr _lastHwnd; // and hwnd for dup checking #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Class used to track new UI appearing and make sure any events // are propogated to that new UI. // // History: // 01/05/2005 : Created // //--------------------------------------------------------------------------- using System; using System.Globalization; using System.Text; using System.Windows.Automation; using System.Diagnostics; using MS.Win32; namespace MS.Internal.Automation { // Class used to track new UI appearing and make sure any events // are propogated to that new UI. internal class WindowInteractionStateTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowInteractionStateTracker() : base(new int[] { NativeMethods.EVENT_OBJECT_STATECHANGE }) { // Intentionally not setting the callback for the base WinEventWrap since the WinEventProc override // in this class calls RaiseEventInThisClientOnly to actually raise the event to the client. } #endregion Constructors //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods internal override void WinEventProc(int eventId, IntPtr hwnd, int idObject, int idChild, uint eventTime) { // ignore any event not pertaining directly to the window if (idObject != UnsafeNativeMethods.OBJID_WINDOW) { return; } // Ignore if this is a bogus hwnd (shouldn't happen) if (hwnd == IntPtr.Zero) { return; } OnStateChange(hwnd, idObject, idChild); } #endregion Internal Methods //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods private void OnStateChange(IntPtr hwnd, int idObject, int idChild) { NativeMethods.HWND nativeHwnd = NativeMethods.HWND.Cast(hwnd); // Ignore windows that have been destroyed if (!SafeNativeMethods.IsWindow(nativeHwnd)) { return; } AutomationElement rawEl = AutomationElement.FromHandle(hwnd); try { rawEl.GetCurrentPattern(WindowPattern.Pattern); } catch (InvalidOperationException) { // Only raise this event for elements with the WindowPattern. return; } Object windowInteractionState = rawEl.GetPatternPropertyValue(WindowPattern.WindowInteractionStateProperty, false); // if has no state value just return if (!(windowInteractionState is WindowInteractionState)) { return; } WindowInteractionState state = (WindowInteractionState)windowInteractionState; // Filter... avoid duplicate events if (hwnd == _lastHwnd && state == _lastState) { return; } AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs( WindowPattern.WindowInteractionStateProperty, hwnd == _lastHwnd ? _lastState : WindowInteractionState.Running, state); ClientEventManager.RaiseEventInThisClientOnly(AutomationElement.AutomationPropertyChangedEvent, rawEl, e); // save the last hwnd/rect for filtering out duplicates _lastHwnd = hwnd; _lastState = state; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private WindowInteractionState _lastState; // keep track of last interaction state private IntPtr _lastHwnd; // and hwnd for dup checking #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- OutputCacheSection.cs
- ResourcePropertyMemberCodeDomSerializer.cs
- ConstructorExpr.cs
- TileBrush.cs
- ScriptModule.cs
- KeyPressEvent.cs
- SequentialOutput.cs
- PickBranchDesigner.xaml.cs
- PresentationAppDomainManager.cs
- CodeExpressionRuleDeclaration.cs
- UTF7Encoding.cs
- ChannelBase.cs
- RayHitTestParameters.cs
- Validator.cs
- AliasedExpr.cs
- Tag.cs
- LinkConverter.cs
- Run.cs
- DbParameterCollectionHelper.cs
- BaseTemplateParser.cs
- PartitionedStream.cs
- BufferedGraphicsContext.cs
- RegistryExceptionHelper.cs
- State.cs
- SessionIDManager.cs
- SystemWebSectionGroup.cs
- IdentityNotMappedException.cs
- WindowClosedEventArgs.cs
- TextDocumentView.cs
- ReceiveMessageRecord.cs
- ObjectDataSourceChooseMethodsPanel.cs
- TransformGroup.cs
- NumericUpDown.cs
- ComAdminWrapper.cs
- ViewKeyConstraint.cs
- BindingExpression.cs
- GridErrorDlg.cs
- CollectionDataContract.cs
- EntityDataSourceStatementEditorForm.cs
- PeoplePickerWrapper.cs
- FormParameter.cs
- CmsInterop.cs
- DataGridCommandEventArgs.cs
- OracleConnectionFactory.cs
- X509WindowsSecurityToken.cs
- XmlNotation.cs
- WindowsTitleBar.cs
- TransactionScope.cs
- ViewValidator.cs
- HMACSHA1.cs
- OdbcUtils.cs
- XmlDocumentType.cs
- TextLineBreak.cs
- UniqueEventHelper.cs
- DataGridCellItemAutomationPeer.cs
- RowToParametersTransformer.cs
- ComplexLine.cs
- EmptyStringExpandableObjectConverter.cs
- CustomCredentialPolicy.cs
- GroupItem.cs
- ToolStripDropDownClosedEventArgs.cs
- Location.cs
- BuildProviderInstallComponent.cs
- DataGridViewIntLinkedList.cs
- MemoryMappedFile.cs
- ServiceInstallComponent.cs
- TraceInternal.cs
- IisTraceListener.cs
- DefaultObjectSerializer.cs
- DataGridViewTextBoxCell.cs
- ElementAction.cs
- GenericTypeParameterBuilder.cs
- AliasedExpr.cs
- SafeHandles.cs
- BindingContext.cs
- IntPtr.cs
- DefaultSettingsSection.cs
- Atom10FormatterFactory.cs
- ValidationSummary.cs
- SqlRemoveConstantOrderBy.cs
- MorphHelpers.cs
- SerializableAttribute.cs
- LinkedResourceCollection.cs
- RC2CryptoServiceProvider.cs
- ToolStripManager.cs
- ValuePattern.cs
- Subset.cs
- GuidConverter.cs
- ObsoleteAttribute.cs
- PolicyValidationException.cs
- TextRangeAdaptor.cs
- WindowsSolidBrush.cs
- UpdateCommand.cs
- XPathEmptyIterator.cs
- DataExpression.cs
- InplaceBitmapMetadataWriter.cs
- DurableOperationContext.cs
- ConnectionPointCookie.cs
- DataControlCommands.cs
- HScrollBar.cs